CVE-2026-87659

State: Published
Severity: 7.1 High
Published: Oct 8, 2026
Updated: Oct 8, 2026
Reserved: Sep 8, 2026

Description

A critical authorization bypass vulnerability exists in the Management Server handling of Brocade Fabric OS versions before 10.0.1. A compromised switch connected to the fabric can transmit crafted inband Fibre Channel vendor-unique CT (Common Transport) management requests to bypass administrative authentication. Successful exploitation allows an unauthorized peer switch to execute administrative actions on the target device, including resetting administrative passwords, initiating system reboots, and triggering firmware downloads.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	brocade

Weaknesses

CWE-306 Missing Authentication for Critical Function

Affected Products

Product	Versions
Fabric OSBrocade	before 10.0.1Affected

References

https://support.broadcom.com/external/content/SecurityAdvisories/0/39153

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